Transcript for Missing Malaysia Flight 370 Could Have Been Caught in 4-Minute Spiral

new details in the mystery of flight 370, the jumbo jet missing since March. Investigators say it was on autopilot and spiralling into the Indian ocean. They're focusing their attention to a new search area. David Kerley with the latest this morning. Reporter: Investigators this morning say the wreckage of this Malaysian jetliner is probably somewhere in the 23,000-square-mile Orange area of this map, miles south of where they already searched underwater. And they think the jet flew on for hours on its own. Certainly, for its path across the Indian ocean, we are confident that the aircraft was operating on autopilot until it ran out of fuel. Reporter: But investigators believe when the 777 did run out of fuel, one engine quit before the other. That would put the jet in a corkscrew spiral, taking nearly four minutes to spin to the surface. All of this based on the jet signaling a satellite every hour. It is along that plat line that the jet likely spiraled into the sea. We are shifting our attention to an area further south along that arc. Broadly in the area where our first search efforts were focused. Reporter: The aerial search of the new priority area was conducted three weeks after the jet went missing. And pilots and crews found nothing. Reporter: At this hour, two ships are mapping the ocean bottom. But it is this Orange area they will search first. But that won't start until August. And a new report out this morning, 57 pages that they admits that the pings they thought were from the black boxes were not. Another false lead on this per

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